Hysteresis friction and nonlinear viscoelasticity of rubber composites

Bhave, Tejas; Tehrani, Mohammad; Ali, Muhammad; Sarvestani, Alireza S.

doi:10.1016/j.coco.2018.07.001

Cited by 15 publications

(4 citation statements)

References 14 publications

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“…This finding could be related to the hysteresis component of the friction due to an overall increase in the wear areas [19]. In a previous study by Bhave et al [45], significant deformations of the tread blocks during slipping on a flooring caused the polymeric material to dissipate the energy and hence, led to enhanced friction. The reduction in depth of tread blocks due to wear restricted the overall bendability of the treads.…”

Section: Discussionmentioning

confidence: 87%

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Gupta,

Chatterjee,

Chanda

2023

Tribol. Ind.

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Slip and fall related injuries are common in workplaces and sufficient shoe-floor friction is required to prevent such incidents. Besides the presence of slippery contaminants, shoe wearing over time is one of the key factors which may lead to significant reduction in shoe-floor friction. While footwear-based slip testing has been conducted widely across floorings and contaminants, limited studies have focused on the effect of worn shoes on slipping. In this work, twelve formal shoes from common brands were tested through modelling of their outsoles in normal and different degrees of progressively worn conditions. Mechanical slip testing was conducted to quantify the available coefficient of friction (ACOF) of the outsole models across dry and two common contaminant conditions (i.e., floor or surface cleaner, and canola oil), and on three commonly available floorings. The effect of flooring, contaminant, and worn area, on the ACOF were characterized extensively. Progressively worn outsoles were found to lead to reduction in ACOF in the range of 28-97%. Outsoles having tread channels oriented at different angles with respect to the direction of footwear motion, were found to generate higher ACOF, than ones with horizontal tread patterns. Outsoles which had larger treads but with lesser intervals (i.e., large tread surface area) showed lower ACOF values. These outsoles experienced less reduction in the ACOF in the following cycles of wear. For safety against slips, outcomes from this work are expected to provide essential information for buying or replacing the formal shoes in its new or worn condition.

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Section: Discussionmentioning

confidence: 87%

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Gupta,

Chatterjee,

Chanda

2023

Tribol. Ind.

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Section: Resultsmentioning

confidence: 99%

“…The phenomenon of the dynamic modulus of filled rubber decreases sharply with increasing strain is known as the Payne effect, and the filler network in rubber matrix is evaluated by Payne effect frequently. 27 Figure 7c shows the dependence of the shear modulus (G´) on strain for the unvulcanized SBR composites with different additives. Comparing with SBR/silica/LPCGE and SBR/silica-s-LPCGE composites, the value of G´for SBR/silica composites at low strains (<10%) is the highest, manifesting large interaction force between unmodified silica particles and strong aggregates network generated from Payne effect.…”

Section: Vulcanization Characteristics and Payne Effect Of Sbr Compos...mentioning

confidence: 99%

Construction of renewable biomass cardanol functionalized spherical nanoparticles achieving favorable interfacial interaction and thermostability in styrene butadiene rubber matrix

Tang

Chen

Jia

et al. 2023

J of Applied Polymer Sci

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To expand the application of natural resources in the green rubber industry and reduce the dependence of rubber additives on the non-renewable petrochemical resources, a novel cardanol-based natural rubber additive (silica-s-LPCGE) is prepared. Compared with the directly adding of silica and LPCGE, silica-s-LPCGE is assisted to form an effective interfacial interaction between the rubber matrix and the filler during rubber vulcanization by the immobilized LPCGE on silica surface, to improve the mechanical property and processability of styrene-butadiene rubber (SBR)/silica-s-LPCGE composites.Meanwhile, with the introduce of silica-s-LPCGE, the aging resistance and migration resistance of the SBR composites are also improved obviously. The preparation of this novel multifunctional supported natural biomass processing additive provides a new possibility for the preparation of green rubber additives.

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“…The unloading did not follow the same path as the loading: it is the phenomenon of hysteresis [23,25]. Thus, the cyclic behavior of this composite can be assimilated to the behavior of the elastomers which is characterized by the hysteresis loop.…”

Section:  Comparison Of the Young's Modulus Of Different Composites mentioning

confidence: 99%

Thermo-mechanical characterization of unsaturated polyester/glass fiber composites for recycling

Nouigues¹,

Bailleul

2020

Int J Mater Form

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Unsaturated-polyester/glass-fiber composites are worldwide more and more used. Actually, their thermochemical and mechanical recycling paths are quite well-known. But, due to the relatively low value of the end products, these two paths are hardly economically viable. Thus, a third way will be proposed as a thermomechanical path. In order to recycle these composites, a study of their thermo-mechanical behaviors is proposed in this work, through various static and dynamic tests at temperatures ranging from ambient to 150°C, over their glass-transition-temperature (Tg). As expected, the results prove that unsaturated-polyester reinforced by woven glass-fibers is more resistant in static flexion and traction than composite made with mixed chopped and woven glass-fibers, at ambient temperature and up to 150°C. Also, static and dynamic tests have shown that composite manufactured by infusion is more resistant than the hand lay-up composite forming. Indeed, dynamic 3-points-flexural-bending test indicates that these composites lose their stiffness during the temperature rise. Furthermore, the composites ageing study shows the appearance of Mullins effect and hysteresis phenomena, at 150°C. After an accelerated ageing in distilled water at ambient temperature, the composite lost about 66% of its flexural resistance but a gain of 195% in its deformation at break is obtained. For an ageing in distilled water at temperature around its Tg, this composite lost the same ratio in its flexural resistance but got 180% in its yield deformation, compared to its virgin state. The mechanical properties lose can be interpreted by the ester function hydrolysis and the glass fibers damage.

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Hysteresis friction and nonlinear viscoelasticity of rubber composites

Cited by 15 publications

References 14 publications

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Construction of renewable biomass cardanol functionalized spherical nanoparticles achieving favorable interfacial interaction and thermostability in styrene butadiene rubber matrix

Thermo-mechanical characterization of unsaturated polyester/glass fiber composites for recycling

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